Browsing: The Tech

BUSCHUR RACING EVO 10 DOUBLE-PUMPER Featuring the same technologies and solutions as the company’s proven EVO 8/9 “Double Pumper”, the extremely-affordable EVO X “Double-Pumper” solution is also a stellar performer. The pair of modified Walbro GSS340 pumps feed into a Y fitting below the hat. This allows for a single 3/8-inch bulkhead fitting up top. A single 3/8-inch or – 6AN line can be used. On the flow bench, the system performed very well. To our surprise, the single outlet performed better than the individual lines running into a tee on the flow bench. Again, the modified pumps showed some…

BUSCHUR RACING EVO 8/9 DOUBLE-PUMPER Buschur Racing has always taken a no-nonsense, no-frills approach to performance. The extremely affordable EVO 8/9 “Double-Pumper” solution is no exception. Combining a pair of modified Walbro GSS340 pumps in a modified stock hanger gets the job done. A modified hat with 3/8-inch barbed fittings allows for twin -6AN lines to feed the fuel rail. Alternatively, a step-up Y-fitting can be used to combine the twin -6AN lines into a single -8AN line. On the flow bench, the system performed very well. The modified pumps showed some of the least flow loss as operating pressures…

With a turn of the key, your ears, skin and teeth are overwhelmed by an external fuel pump vibrating at the same frequency as an ultrasonic electric toothbrush. Instead of vibrating soft bristles against your tooth’s enamel to remove plaque, the continuous, unrelenting buzz from the mega-flow pump acts like an enhanced interrogation device. During the early years of import performance, both competition and serious-street-performance cars relied upon these noise-polluting pumps to meet the fuel flow demands of highhorsepower, fuel-injected engines. Not even giving up your country’s top secrets would stop the torture dished out from these pumps. Fortunately, those…

Do you believe in miracles? What about a performance fuel that delivers race gas performance at a price below four-dollars per gallon? If you look at performance shops around the country, you’ll find more and more enthusiasts making the shuffle to E85. E85 is a blend of 85-percent ethanol and 15-percent gasoline that delivers racing gas performance at under four-dollars per gallon. While the popularity of E85 was previously restricted to regions offering widespread availability, the increasing support of FLEX fuel strategies by aftermarket engine management systems has made the E85 craze a national phenomenon. While the performance potential and…

In our last STI GVB Test & Tune, we increased the EJ257’s operating efficiency with a bolt-on intake system, a high-flow downpipe, and an exhaust system. These bolt-ons netted a peak horsepower gain of just over 31 horsepower but revealed the limitations of the factory intercooler system as the power curves showed signs of detonation. In this segment we’ll explore solutions that allow us to safely increase the EJ’s power output while eliminating harmful detonation. Text and Photos by Arnold Eugenio // Dyno Testing and Tuning by Bill Knose/HG Motorsports The Parts The STI’s top-mounted intercooler sits above the engine,…

A split second can make the difference between winning and losing a race. A loss of traction is often the cause of those split second differences in performance. Hondata Inc. has studied traction issues experienced by drag racers, road racers, land speed racers and even the daily driver in their quest to put more Hondata-equipped cars in the winner’s circle. What started as a pet project developed into a new product solution thanks to a four-year development effort. Text and Photos by Richard Fong Interference Factory stability control and traction control systems employ the ABS sensors among other factory-installed sensors…

The last time we checked in on our Subaru STI sedan Test & Tune project, we extracted an additional 34.5 WHP by simply changing engine oil, installing new spark plugs, fine-tuning the engine calibration and increasing peak boost pressure by only 1.5psi. This time around, we enlisted the services of several bolt-on parts that are common to the upgrade path for EJ257 owners. In this process, we discovered a few more limitations of the factory system. Understanding these limits allows enthusiasts to make the right choices to safely increase power. Text by Arnold Eugenio // Photos by Richard Fong //…

Subaru’s third-generation STI platform was released in the model year 2008 but was initially available only in the 5-door wagon configuration. This lack of choices had many Subaru enthusiasts holding off on purchases until the release of the GVB-coded sedan in 2011. With a few minor facelift and aero enhancements, the 2011-and-up STI models retained the same 2.5-liter EJ257 turbocharged boxer engine with its factory-rated 305 HP power output. The only notable difference between Gen 3A and Gen 3B STIs, outside of the availability of both the sedan and wagon platforms, was Subaru’s switch to a full-synthetic engine oil straight…

In this day and age of “there’s an app for that,” it is sometimes hard to “wow” someone with new technology. Instead of an “oh my God” reaction, a “that’s pretty cool” response is usually an indicator of something quite innovative. AEM Electronics is hoping for an “oh my God” reaction to its latest engine management system. The AEM Infinity-10 EMS puts leading-edge motorsports-technology engine management into a new platform for PnP high-performance enthusiasts. Text by Michael Ferrara // Photos by Arnold Eugenio The Legacy While AEM may not have technically made the first plug-and-play (PnP) engine management systems, it…

In our first Test & Tune with the K20Z3-based Honda Civic Si, we managed to bump up the power production with an overall 12.6 peak whp gained, with sections of the powerband showing increases as much as 19.1 whp. These power increases were realized with basic bolt-on products and an engine-refreshing upgrade to synthetic oil. For this round of parts, we decided to turn our attention to the area in and around the cylinder head to see if a few more aggressive bolt-ons could add power to our naturally-aspirated coupe. Text by Arnold Eugenio // Photos by Jeren Walker, Vinh…

The eighth generation Honda Civic represents a legacy that dates back to the early 70’s. What started as an economy car evolved into the leader of the import tuning revolution of the early 90’s. Even though Subaru’s STI, Mitsubishi’s Evolution and Nissan’s Z have become exceptionally popular in the sport compact segment, an army of Honda loyalists continue to support the Civic banner, and Honda continues to answer with the Si. Text by Richard Fong // Photos by Jeren Walker, Vinh Nguyen and Richard Fong // Wrenching by Jeren Walker K20Z3 Engine The FG2 Civic Si coupe and the FA5…

Nothing can put the brakes on a project quicker than a FROZEN nut or bolt. Aside from being a massive frustration, seized hardware can lead you to demolish perfectly good tools or bust a knuckle or two. While there is no one method that will work on each and every situation, there are a few procedures that have proven effective in the past. Here’s a quick look at some knuckle-saving techniques. Text and Photos by Robert Choo Public Enemy #1 Make no mistake; rust and other types of metal oxidation are your enemy. Unfortunately, the underside of a car is…

How refreshing it is to have our Project EVO in the magazine for two consecutive issues. Things rarely go as planned in the world of magazine project cars, but last month things finally started to come together for our Project EVO. To top it off, we finally managed to get over the 300-wheel-horsepower hurdle on XS Engineering’s 4WD dyno. Text and Photos by Michael Ferrara In the beginning of our Project EVO, we had outlined breaking our buildup into three distinct levels of tune. Level One would seek to maximize power with the factory turbocharger. Level Two would look for…

It’s been four issues since we last visited our Project EVO. During this time, the EVO has been involved in one of our most time consuming product evaluations of all time. This evaluation consisted of testing nearly every available exhaust system for the EVO. If you are interested in the results, be sure to pick up the June/July 2004 issue of our sister publication TPR. Text by Michael Ferrara // Photos by Michael Ferrara and Phil Lam PREVIOUSLY… When we last left our Project EVO, we had installed an HKS EVC electronic boost controller, the HKS FCON-V Pro engine management…

For the second month in a row, our STi earned a bye-run in competing against our EVO-VIII. The EVO-VIII has been involved with one of our most-extensive exhaust tests that will appear in our sister publication Tuner Performance Reports (TPR). Text by Michael Ferrara // Photos by Phil Lam As we set out from the start, our buildups will attempt to achieve peak reliable performance in three different configurations. Our first level will involve the parts and tuning that will help us achieve maximum performance from the stock engine and turbo combination. Our next level will attempt to achieve peak…

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